This was slithering around O'Hare Airport

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An airport worker used a broom and dustpan to capture the 18-inch creature

Twitter photos show an alligator on the Blue Line train to O'Hare

Carrying an alligator bag on an airline flight is fine, but live alligators are banned from boarding. That might explain why a toothy reptile was slithering around Chicago's O'Hare International Airport on Friday.

Security guard Tineka Walker was on patrol at Terminal 3 when a passenger alerted her to the suspicious object under an escalator.

When Walker radioed for help, Chicago Police Officer Anthony Oliver thought at first it was a crock. "Figured somebody was messing with us," Oliver told WBBM.

No need to call Tarzan to wrestle the gator, which was only about 18 inches long. An airport worker used a broom and dustpan to capture it. Animal control picked it up from police and handed it over to the Chicago Herpetological Society.